Backuping a raw inside the partition suspends the machine

A

alexpacio

Member
Dec 5, 2009
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Hi,
I moved my machines into Volume Groups and backups work successfully, except when i try to backup a VM that includes 2 disks on Volume Groups and 1 disk in a raw file. The backup works but the VM is supsended and my USB devices don't work anymore. The question is: is it possible to make snapshots of raw files through vzdump, preventing the suspension of VMs?

LOG FILE EXAMPLE:
102: Jan 07 01:23:35 INFO: Starting Backup of VM 102 (qemu)
102: Jan 07 01:23:35 INFO: running
102: Jan 07 01:23:35 INFO: status = running
102: Jan 07 01:23:36 INFO: backup mode: snapshot
102: Jan 07 01:23:36 INFO: bandwidth limit: 10240 KB/s
102: Jan 07 01:23:36 INFO: suspend vm to make snapshot
102: Jan 07 01:23:37 INFO: Logical volume "vzsnap-vm-0" created
102: Jan 07 01:23:38 INFO: Logical volume "vzsnap-vm-1" created
102: Jan 07 01:23:39 INFO: Logical volume "vzsnap-vm-0" created
102: Jan 07 01:23:39 INFO: resume vm
102: Jan 07 01:23:39 INFO: vm is online again after 3 seconds
102: Jan 07 01:23:39 INFO: creating archive '/mnt/backup/vzdump-qemu-102-2010_01_07-01_23_35.tgz'
102: Jan 07 01:23:39 INFO: adding '/mnt/backup/vzdump-qemu-102-2010_01_07-01_23_35.tmp/qemu-server.conf' to archive ('qemu-server.conf')
102: Jan 07 01:23:39 INFO: adding '/dev/win2008/vzsnap-vm-0' to archive ('vm-disk-virtio0.raw')
102: Jan 07 02:00:04 INFO: adding '/dev/win2008/vzsnap-vm-1' to archive ('vm-disk-virtio1.raw')
102: Jan 07 02:54:04 INFO: adding '/mnt/vzsnap0/images/102/WINDOWS2008R2_HDH.raw' to archive ('vm-disk-virtio2.raw')
102: Jan 07 04:50:02 INFO: Total bytes written: 111038530560 (8.55 MiB/s)
102: Jan 07 04:50:02 INFO: archive file size: 78.23GB
102: Jan 07 04:50:02 INFO: delete old backup '/mnt/backup/vzdump-qemu-102-2010_01_06-01_23_48.tgz'
102: Jan 07 04:51:56 INFO: Logical volume "vzsnap-vm-0" successfully removed
102: Jan 07 04:51:58 INFO: Logical volume "vzsnap-vm-1" successfully removed
102: Jan 07 04:51:59 INFO: Logical volume "vzsnap-vm-0" successfully removed
102: Jan 07 04:51:59 INFO: Finished Backup of VM 102 (03:28:24)
 
Hi, I made a new Volume Group, replacing the raw disk file inside the partition, but the scheduled backup won't work as should... it suspends my VM again, even if VM disks are now in VGs.
I have 3 disks in 3 separate VGs in Virtio mode.
How can i solve this problem?
 
Sorry if that was unclear, but the reason for the short suspend is that you use more than one disk - but is is only 3 seconds.

In general, the only way to consistently shapshot 3 disks is to do a short suspend (well, maybe it is possible to optimize that when all files are on the same logical volume).
 
Last edited:
Yes but my Windows VM has an USB printer linked through qemu and when vzdump suspends and resumes the vm, the printer doesn't work anymore (to make it work i have to restart the vm everytime i do a backup)...
 
alexpacio said:
Yes but my Windows VM has an USB printer linked through qemu and when vzdump suspends and resumes the vm, the printer doesn't work anymore (to make it work i have to restart the vm everytime i do a backup)...
Click to expand...

What is the suggestion?
 
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